Erotic means giving sexual pleasure or sexually arousing, while exotic means being or from or characteristic of another place or part of the world or strikingly strange or unusual.

Antonyms:

anaphrodisiac, bland, dull, frigid, unerotic, unsexy

Contextual Examples:

• The principles of definition, the law of contradiction, the fallacy of arguing in a circle, the distinction between the essence and accidents of a thing or notion, between means and ends, between causes and conditions; also the division of the mind into the rational, concupiscent, and irascible elements, or of pleasures and desires into necessary and unnecessary - these and other great forms of thought are all of them to be found in the Republic, and were probably first invented by Plato.

• Is it not better to fall into the hands of a murderer, than into the dreams of a concupiscent woman?